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Question

Which of the following is true regarding passive immunity?


A

It is not developed directly in the individual

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B

It has to be transferred from immune to non-immune individual

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C

It is due to direct exposure to the pathogen by the individual

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D

None of the above

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Solution

The correct option is B

It has to be transferred from immune to non-immune individual


Direct exposure to the pathogen causes the formation of immune cells in an individual, which fights off the pathogen. But passive immunity as the name suggests, is not developed directly in the individual. It is provided by means of transferred antibodies from an individual who developed them on direct exposure to the pathogen to an individual who has not been exposed to that pathogen.


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